set_property PACKAGE_PIN M14 [get_ports {led_out[3]}]
set_property PACKAGE_PIN N16 [get_ports {led_out[2]}]
set_property PACKAGE_PIN P14 [get_ports {led_out[1]}]
set_property PACKAGE_PIN R14 [get_ports {led_out[0]}]
set_property PACKAGE_PIN H16 [get_ports CLK]
set_property IOSTANDARD LVCMOS33 [get_ports {led_out[3]}]
set_property IOSTANDARD LVCMOS33 [get_ports {led_out[2]}]
set_property IOSTANDARD LVCMOS33 [get_ports {led_out[1]}]
set_property IOSTANDARD LVCMOS33 [get_ports {led_out[0]}]
set_property IOSTANDARD LVCMOS33 [get_ports CLK]

create_clock -period 20.000 -name CLK -waveform {0.000 10.000} [get_ports CLK]
